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Takashi Kajiyama
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Shizuoka, JP
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last 30 patents
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Patent Grant
Process of producing magnetic recording media
Patent number
4,548,682
Issue date
Oct 22, 1985
Nippon Light Metal Company Limited
Koichi Yoshida
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Aluminum substrate for magnetic recording media
Patent number
4,540,449
Issue date
Sep 10, 1985
Nippon Light Metal Company Limited
Koichi Yoshida
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Process of producing aluminum substrate for magnetic recording media
Patent number
4,507,179
Issue date
Mar 26, 1985
Nippon Light Metal Company Limited
Koichi Yoshida
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Method for production of colored aluminum article
Patent number
4,414,077
Issue date
Nov 8, 1983
Nippon Light Metal Company Limited
Kohichi Yoshida
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR